R36 Coolant Change

[Passat R36]

I am planing to change the coolant for my R36. I searched internet and have not found any info regarding the radiator drain plug. So i jacked the car up and had a look. Apparently there is no drain plug, the hose needs to be pulled to drain.

So Question: Do I disconnect the RED arrow part or BLUE arrow part? Thanks.
19880

[Umai Naa!!]

I just pull the temp sensor out (by removing the green circlip). Just make sure you retrieve the O-ring.

[Passat R36]

I just pull the temp sensor out (by removing the green circlip). Just make sure you retrieve the O-ring.

OMG! Sounds too easy, any tricks there? easy to put the Oring back and reinstall? Thanks!!!

[Umai Naa!!]

Yeah, just put the O-ring back on the sensor and push it back in, then reinstall the circlip.

Those quick-release couplers on the radiator hose itself, can be a pain to get off, and then back on again.

[Passat R36]

Yeah, just put the O-ring back on the sensor and push it back in, then reinstall the circlip.

Those quick-release couplers on the radiator hose itself, can be a pain to get off, and then back on again.

Really appreciated! Very helpful as always!

[maddoglee]

Have you guys got any tips on bleeding the system after flushing the coolant?

[IanPGonzaga]

Start the engine and start pouring the coolant in - let the overflow bottle fill up and bubbles will just naturally want to come out.